PPT: Network Basics & Basic Laws

 Page 1


Network Theory
Page 2


Network Theory
Network Theory
Definition
The study of solving 
problems of electric circuits 
or electric networks.
Focus
This document introduces 
basic terminology and types 
of network elements.
Application
Essential for understanding 
electrical engineering 
fundamentals.
Page 3


Network Theory
Network Theory
Definition
The study of solving 
problems of electric circuits 
or electric networks.
Focus
This document introduces 
basic terminology and types 
of network elements.
Application
Essential for understanding 
electrical engineering 
fundamentals.
Basic Terminology
Electric Circuit
A closed path for 
electron flow from a 
voltage or current 
source.
Electric Network
May not contain a 
closed path for electron 
flow.
Current, Voltage, 
Power
Essential concepts for 
understanding network 
theory.
Page 4


Network Theory
Network Theory
Definition
The study of solving 
problems of electric circuits 
or electric networks.
Focus
This document introduces 
basic terminology and types 
of network elements.
Application
Essential for understanding 
electrical engineering 
fundamentals.
Basic Terminology
Electric Circuit
A closed path for 
electron flow from a 
voltage or current 
source.
Electric Network
May not contain a 
closed path for electron 
flow.
Current, Voltage, 
Power
Essential concepts for 
understanding network 
theory.
Electric Circuit
Electric Circuit
Contains a closed path for electron flow from 
a voltage or current source.
Elements may be in series connection, 
parallel connection, or a combination of both.
Electric Network
Need not contain a closed path for electron 
flow.
"All electric circuits are electric networks" but 
the converse need not be true.
Page 5


Network Theory
Network Theory
Definition
The study of solving 
problems of electric circuits 
or electric networks.
Focus
This document introduces 
basic terminology and types 
of network elements.
Application
Essential for understanding 
electrical engineering 
fundamentals.
Basic Terminology
Electric Circuit
A closed path for 
electron flow from a 
voltage or current 
source.
Electric Network
May not contain a 
closed path for electron 
flow.
Current, Voltage, 
Power
Essential concepts for 
understanding network 
theory.
Electric Circuit
Electric Circuit
Contains a closed path for electron flow from 
a voltage or current source.
Elements may be in series connection, 
parallel connection, or a combination of both.
Electric Network
Need not contain a closed path for electron 
flow.
"All electric circuits are electric networks" but 
the converse need not be true.
C u r r e n t
D e f i n i t i o n
The time rate of flow 
of charge. 
Mathematically: I = 
dQ/dt
A n a l o g y
Similar to water 
flowing through a 
pipe.
T y p e s
Electron current flows negative to positive. 
Conventional current flows positive to negative.